If you have a version three tamagotchi, you can go online in tamatown where you can find out lots of passwords for your tamagotchi. Here is the link to tamatwon. I hope that I helped and feel free to PM me if you need any more tamagotchi help.
¯| umm Chlema..... for V3 you can go online and get passwords for your tama and you put them in your tama and get prizes... and if you had a v3 already, shoulda had read the back and instruction manual carefull ><